Full-Stack Developer Intern at Keyshade

Location: Mumbai (Onsite)

Experience: 4–6 Years

Salary: ₹75,000 – ₹1,200,000 per month (depending on experience & skill set)

Employment Type: Full-time

Job Description

We are looking for a skilled React Developer to join our team in Mumbai. The ideal candidate should have strong hands-on experience in building modern, responsive web applications using React and be comfortable working with at least one backend technology such as Python, Node.js, or PHP.

Key Responsibilities

• Develop and maintain user-friendly web applications using React.js
• Convert UI/UX designs into high-quality, reusable components
• Work with REST APIs and integrate frontend with backend services
• Collaborate with backend developers (Python / Node.js / PHP)
• Optimize applications for performance, scalability, and responsiveness
• Manage application state using Redux / Context API / similar
• Write clean, maintainable, and well-documented code
• Participate in code reviews and sprint planning
• Debug and resolve frontend and integration issues
• Ensure cross-browser and cross-device compatibility

Required Skills & Qualifications

• 6–8 years of experience in frontend development
• Strong expertise in React.js
• Proficiency in JavaScript (ES6+)
• Experience with HTML5, CSS3, Responsive Design
• Hands-on experience with RESTful APIs
• Working knowledge of at least one backend technology:
• Python (Django / Flask / FastAPI) OR
• Node.js (Express / NestJS) OR
• PHP (Laravel preferred)
• Familiarity with Git / version control systems
• Understanding of component-based architecture
• Experience working in Linux environments

Good to Have (Preferred Skills)

• Experience with Next.js
• Knowledge of TypeScript
• Familiarity with Redux / React Query
• Basic understanding of databases (MySQL / MongoDB)
• Experience with CI/CD pipelines
• Exposure to AWS or cloud platforms
• Experience working in Agile/Scrum teams

What We Offer

• Competitive salary based on experience and skills
• Onsite role with a collaborative team in Mumbai
• Opportunity to work on modern tech stack and real-world projects
• Career growth and learning opportunities

Interested candidates can share their resumes at

Job Type: Full-time

Application Question(s):

• If selected, how soon can you join?
• Are you okay with the salary slab (50,000-90,000) , depending upon your experience?
• Have you worked on a production React application where you integrated REST APIs and handled authentication and error scenarios with a backend (Python / Node.js / PHP)?

Experience:

• Total: 5 years (Required)
• Python: 5 years (Required)

Location:

• Mumbai, Maharashtra (Required)

Work Location: In person

Role & Responsibilities

Contributes to the technical vision for an engineering team, aligning with company-wide strategies and goals.

Contributes to the design and development of robust, scalable, and user-friendly web applications.

Create innovative solutions using the latest technologies and tools for front end development and backend development.

Collaborate with product managers, designers, and engineers to define product direction and to deliver complex applications.

Conduct thorough code reviews and provide constructive feedback to ensure high-quality code.

Mentor and guide junior engineers, fostering a culture of continuous learning and improvement.

Troubleshoot and debug complex issues in production environments, working closely with customer support and operations teams to ensure timely resolution and minimal disruption to business operations

We're looking for an experienced Full-Stack Engineer who can architect and build AI-powered agent systems from the ground up. You'll work across the entire stack—from designing scalable backend services and LLM orchestration pipelines to creating frontend interfaces for agent interactions through widgets, bots, plugins, and browser extensions.

You should be fluent in modern backend technologies, AI/LLM integration patterns, and frontend development, with strong systems design thinking and the ability to navigate the complexities of building reliable AI applications.

Note: This is an on-site, 6-day-a-week role. We are in a critical product development phase where sthe peed of iteration directly determines market success. At this early stage, speed of execution and clarity of thought are our strongest moats, and we are doubling down on both as we build through our 0→1 journey.

WHAT YOU BRING:

You take ownership of complex technical challenges end to end, from system architecture to deployment, and thrive in a lean team where every person is a builder. You maintain a strong bias for action, moving quickly to prototype and validate AI agent capabilities while building production-grade systems. You consistently deliver reliable, scalable solutions that leverage AI effectively — whether it's designing robust prompt chains, implementing RAG systems, building conversational interfaces, or creating seamless browser extensions.

You earn trust through technical depth, reliable execution, and the ability to bridge AI capabilities with practical business needs. Above all, you are obsessed with building intelligent systems that actually work. You think deeply about system reliability, performance, cost optimization, and you're motivated by creating AI experiences that deliver real value to our enterprise customers.

WHAT YOU WILL DO:

Your primary responsibility (95% of your time) will be designing and building AI agent systems across the full stack. Specifically, you will:

• Architect and implement scalable backend services for AI agent orchestration, including LLM integration, prompt management, context handling, and conversation state management.
• Design and build robust AI pipelines — implementing RAG systems, agent workflows, tool calling, and chain-of-thought reasoning patterns.
• Develop frontend interfaces for AI interactions including embeddable widgets, Chrome extensions, chat interfaces, and integration plugins for third-party platforms.
• Optimize LLM operations — managing token usage, implementing caching strategies, handling rate limits, and building evaluation frameworks for agent performance.
• Build observability and monitoring systems for AI agents, including prompt versioning, conversation analytics, and quality assurance pipelines.
• Collaborate on system design decisions around AI infrastructure, model selection, vector databases, and real-time agent capabilities.
• Stay current with AI/LLM developments and pragmatically adopt new techniques (function calling, multi-agent systems, advanced prompting strategies) where they add value.

BASIC QUALIFICATIONS:

• 4–6 years of full-stack development experience, with at least 1 year working with LLMs and AI systems.
• Strong backend engineering skills: proficiency in Node.js, Python, or similar; experience with API design, database systems, and distributed architectures.
• Hands-on AI/LLM experience: prompt engineering, working with OpenAI/Anthropic/Google APIs, implementing RAG, managing context windows, and optimizing for latency/cost.
• Frontend development capabilities: JavaScript/TypeScript, React or Vue, browser extension development, and building embeddable widgets.
• Systems design thinking: ability to architect scalable, fault-tolerant systems that handle the unique challenges of AI applications (non-determinism, latency, cost).
• Experience with AI operations: prompt versioning, A/B testing for prompts, monitoring agent behavior, and implementing guardrails.
• Understanding of vector databases, embedding models, and semantic search implementations.
• Comfortable working in fast-moving, startup-style environments with high ownership.

PREFERRED QUALIFICATIONS:

• Experience with advanced LLM techniques: fine-tuning, function calling, agent frameworks (LangChain, LlamaIndex, AutoGPT patterns).
• Familiarity with ML ops tools and practices for production AI systems.
• Prior work on conversational AI, chatbots, or virtual assistants at scale.
• Experience with real-time systems, WebSockets, and streaming responses.
• Knowledge of browser automation, web scraping, or RPA technologies.
• Experience with multi-tenant SaaS architectures and enterprise security requirements.
• Contributions to open-source AI/LLM projects or published work in the field.

WHAT WE OFFER:

• Competitive salary + meaningful equity.
• High ownership and the opportunity to shape product direction.
• Direct impact on cutting-edge AI product development.
• A collaborative team that values clarity, autonomy, and velocity.

Responsibilities:

• Work with product managers to find solutions to critical problems, face internal customers, and create requirements.
• Triage and fix critical issues that arise in the field that affect our core product.
• Manage git repositories, pull requests, and review code.
• Communicate properly & promptly with all stakeholders.
• Build a proof-of-concept for new products from scratch.
• Optimize, clean up, and comment on the existing codebase.

Requirements:

• Must have 5-8 years of hands-on engineering experience.
• Must be an expert in JavaScript/Typescript with ES6+ features, Node.js, ReactJS, and Redux
• Must be an expert in HTML5 CSS3 SASS, and Webpack.
• You are proficient with RESTful API design and implementation using Node.js.0
• Proficiency in relational (MySQL, Cloud Spanner etc. ) and non-relational (MongoDB, Google Cloud Firestore etc. ) databases.
• Must be an expert in data structure and creating highly optimized algorithms.
• Should have a working knowledge of GCP services like App Engine, CloudSQL, Compute Engine etc.
• Should have a working understanding of microservices patterns, serverless design, and event-based architecture.
• Willingness to learn new programming languages, frameworks, and paradigms.

Build and maintain products. Build products and features, through inception, design, implementation and launch, working closely with multiple disciplines across the company. You will spend the majority of your time working on critical projects which require focus on integrations, scalability, and performance. You will also be the first line of defense in ensuring that the product features are achievable and have a clear purpose, trimming off unnecessary detailing, especially in the earliest stages. Align across teams and stakeholders. Play a key role in ensuring that objectives and expectations are aligned across multiple concurrent products. You are expected to break down features within each project and prioritize tasks based on the expertise of the team, keeping redundancy in mind. 

Maintain a high bar for code quality and future proofing. Implement processes for checking in code that maintains a high bar of code quality. You are expected to optimize for a solution that affords the best user experience in a reasonable amount of time while ensuring to allow for adequate security, ability to scale in the future etc. 

Responsibilities

● Design, build and maintain scalable, secure web services and distributed systems

● Design and develop robust solutions for client onboarding, portfolio analytics, tokenized security issuance, authentication, and security

● Build solutions to integrate with APIs of external solutions providers including crypto custodians, exchanges, fund admins etc.

● Architecting and building frontend features in React.js

● Ensuring a highly performant and responsive UI

● Help maintain existing codebase, infrastructure, test coverage, and documentation

● Communicate requirements effectively within and across teams

● Independently work and lead project initiatives in a fast paced environment

Requirements

● 5+ years of work experience as a Senior Software Engineer or similarly senior member of a fast scaling company, ideally building products from ideation to launch with a strong engineering team. Web3 based experience preferred.

● Have experience in rapid prototyping of features across various products. Demonstrable open source contributions and experience with Git advantageous.

● Professional experience with Python, Javascript, Typescript, or Go

● Must have experience building and/or integrating with RESTful APIs

● Working knowledge of Django, FastAPI, or React.js and Redux

● Working knowledge various frontend frameworks and languages such as HTML, CSS

● Experience monitoring and scaling microservice-oriented systems

● Familiarity with websocket architecture and implementation

● Experience working with cloud-native AWS infrastructure and/or Kubernetes

● Team-building and technical leadership experience

● Being nimble and reacting quickly to changing business conditions

● BTech in Computer Science or a related field (Masters is a plus

Benefits

● Competitive salary, benefits & participation in the firm's ESOP program

● Be part of something exciting. Rare opportunity to come in early and build the next generation of institutional grade financial services.

● International work environment and flat organization. Possibility for relocation and international transfers mid-career

About TechWeirdo:

Techweirdo delivers secure enterprise solutions from SaaS to On-Premise, anywhere, from Application to AI. We offer consultation, services and products to holistically address the digital transformation goals of the enterprises.

We are currently hiring a passionate, product-oriented MERN stack engineer to join a collaborative and innovative team to create technologically challenging, visually delightful, and easy-to-use digital products in a fast-paced environment.

Key Responsibilities:

• Design, build, optimize different modules of scalable applications on MERN stack

• Work closely with architects, business analysts, product managers, QA and UI designers to understand the deliverable and business priorities, UX flow and deliver QA approved, unit-testable solutions

• Collaborate with other members of technical team, delegate tasks, participate in code reviews and find out scope of further optimization

• Appear in project interviews, product roadmap discussions, feasibility analysis and sprint retrospective meetings to help in smooth project delivery as per customer expectation and technological excellence.

Skills/ Role Requirements:

• Strong knowledge of Node.js, Express, Microservices, npm packages

• Reactjs (exposure to Typescript is preferred)

• MongoDB, MySQL or any other Sql database

• Ability to write high quality REST APIs in Nodejs and Express

• Ability to create highly scalable and modular components

• Strong knowledge of using ORMs (Sequelize, mongoose)

• Hands-on experience on deploy, monitor, optimize, load-balance large scale nodejs applications on production

• Experience in serverless architecture either lambda or google cloud functions are a plus

• Hands-on experience on Docker, message queue, Redis, AWS managed services are a plus

• Server-side rendering (Nextjs), knowledge of Unix, shell script, deployment, and code sanitization/optimization (Intermediate)

• Have experience in working on large scale enterprise applications

• Strong understanding of coding best practices, error handling, lazy loading, etc.

• Experience in object-oriented design skills.

• An analytical mind and Problem-solving skills

• Open source contribution, active participation in developer communities, publishing own npm packages are plus

Working with TechWeirdo be like:

1. Surrounded by curious learners: With a Growth Mindset as our core strength, we created a learning environment with curious tech learners.

2. New challenges every day: There is no ordinary day at TechWeirdo, if you like solving problems, then this is the right place for you.

3. Zero micro-management, limited supervision: We encourage our team to take on challenging tasks and solve complex problems by taking ownership of their tasks. We trust our team to take calculated risks.

4. Great networking: You will be connected with c-suite executives of top organizations while working with our winning team.

5. Building technology how you want, when you want: We welcome people who see things differently as they are the one who has ability to change the world.

6. Being heard in every meeting: At TechWeirdo, suggestions are encouraged, initiatives are supported, and opinions and perspectives are valued.

Role – Java Full-Stack Developer

Skills

• Professional experience (5-8Y) in commercial software or corporate application Backend and Frontend/UI development
• Strong experience in Typescript/ Javascript - Min 3Y
• Knowledge and experience in enterprise-scale, multi-tier, distributed architecture
• Solid experience in object-oriented design and development with languages such as Java 8.0 onwards
• Solid knowledge of high-scale, multi-tenant Web service development, including REST/JSON and Microserviceservice patterns
• Solid experience in Spring Boot
• Solid experience in Spring Data/JPA/Hibernate
• Exposure to multithreading and Junit is a must.
• Proficient in database concepts and working experience with Oracle Database
• Proficient in performance analysis and tuning
• Proficiency with agile development methodologies
• Excellent written and verbal communication skills
• Good analytical and problem-solving skills
• Strong and real production experience with Angular 8.0 onwards and its core principles – Min 3Y
• In-depth knowledge of HTML5, CSS3, SCSS, Angular Material UI web standards and how to apply them.
• Experience in responsive design using bootstrape or similar framework and progressive enhancement techniques
• Experience in developing reusable components in Angular
• Working knowledge of Forms-based Applications
• Integration experience with REST-based APIs
• Familiarity with modern front-end build pipelines and tools
• Experience with data structure libraries (e.g., Immutable.js)
• Ability to understand business requirements and translate them into technical requirements
• Proficiency with Git (Bitbucket, GitHub, Gitlab) is an advantage
• Proficiency with agile development methodologies
• Excellent written and verbal communication skills
• Good analytical and problem-solving skills

JD/Responsibility

• Developing new user-facing features using Angular 8.0
• Building reusable components and front-end libraries for future use.
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Debugging/troubleshooting web applications
• Collaborate closely with groups in and outside the development team (eg. QA, Product Management, Tech Pub) to achieve well groomed, predictable results
• Analyze, design, develop and unit test software applications with high quality and on schedule, including business critical Web services to be consumed by internal/external applications.
• Analyzes, programs, and modifies software enhancements and/or new products used in local, networked, or Internet-related computer programs.
• Use modern technologies and apply industry-standard software development best practices.
• Collaborate closely with groups in and outside the development team (eg. QA, Product Management, Tech Pub) to achieve well-groomed, predictable results
• Flexible for Domestic travel based on project needs.
• 
  

Experience: 5-7 Yrs

Location: Mumbai (onsite)

Notice Period: 30 days maximum

i2V Systems builds products in the video surveillance domain. We are looking for Full Stack developers who are capable solving complex problems, and have a strong will to get things done.

Job Responsibilities:

• Work on designing and development of new software products.
• Work on Improving, optimising and maintaining existing software products.
• Helping deployment team deploy products you work on.

Skills required:

• Good knowledge in C#, Javascript.
• Hands-on development experience in of. NET and Angular framework.
• Good knowledge of basic data structures and algorithms.
• Experience in database design preferrable.
• Familiarity with database technologies such as MySQL and PostgreSQL.
• Ability to learn new technologies, frameworks and programming languages.

We believe that great change begins with individuals who are given the freedom to make a difference, and we champion this in all that we do here at Vamstar. Hence we are urgently looking to hire a senior person to fill in for a Full Stack Engineer

The ideal candidate will be responsible for developing high-quality applications along with designing and implementing testable and highly scalable codes. If you have a gig towards Java, Node, AWS, Javascript and Typescript and have worked extensively in web application development; we are looking for you.

Responsibilities

• Managing team(s)
• Develop quality software and web applications
• Analyze and maintain existing software applications
• Design highly scalable, testable code
• Discover and fix programming bugs

Qualifications

• B.Tech - CS from a Tier 1/2 college
• Minimum 5 years of experience
• Great communication skills

Key Benefits 

• Performance Bonus on a Quarterly basis on performance 
• 25 days paid holidays each year including your accrued leaves, sick leaves, fixated and optional holidays. 
• Flexible working hours 
• Permanent Work from home 
• Yearly virtual cross-tribe pollinations (we have another engineering team in UK, US and Vietnam) 
• Wholesome development experience with MacBook Pro and extra monitor(s) post completion of Probation period/ machine bonuses 
• Regular and transparent appraisals based on performance. 

More about our Team: As an engineering team, we are dedicated, hardworking and always looking to learn and improve our craft. This happens in regular knowledge sharing sessions with both Full Stack and Machine Learning teams, and we are always keen to collaborate when a challenging problem comes up. In our work, we use industry best practices like Github. AWS, Ally, Trello, Slack, TDD, CI/CD and code reviews as part of building every feature. We also continually evaluate new technologies to see if they can help improve our platform.